#banniere
{
width: 600px;
height: 150px;
background-position:  center;
margin-bottom: 20px; 
background-image: url('images/banniere.jpg');
}

#corps_forum
{
border: 1px solid black;
width: 90%;
margin-top: 50px;
margin-left: 5%;
margin-bottom: 10Opx;
padding: 5px;
background-color: rgb(237,224,213);
}

#footer
{
border: 1px solid black;
width: 90%;
margin-top: 50px;
margin-left: 5%;
margin-bottom: 10Opx;
padding: 5px;
background-color: rgb(237,224,213);
}